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Title: Hydrous zirconia as a selective catalyst for the Meerwein-Ponndorf-Verley reduction of cinnamaldehyde
Authors: Liu, S.H. 
Jaenicke, S. 
Chuah, G.K. 
Keywords: Cinnamaldehyde
Grafted zirconium 1-propoxide
Hydrous zirconia
Hydroxyl concentration
MPV reduction
Zeolite beta
Issue Date: 2002
Citation: Liu, S.H., Jaenicke, S., Chuah, G.K. (2002). Hydrous zirconia as a selective catalyst for the Meerwein-Ponndorf-Verley reduction of cinnamaldehyde. Journal of Catalysis 206 (2) : 321-330. ScholarBank@NUS Repository.
Abstract: Hydrous zirconia was found to be active in the Meerwein-Ponndorf-Verley (MPV) reduction of cinnamaldehyde with 2-propanol. An initial selectivity to cinnamyl alcohol of higher than 97% was measured. At longer reaction times, etherification between cinnamyl alcohol and 2-propanol decreased the selectivity. The activity decreased sharply when the hydrous zirconia was calcined to higher temperatures. Surface hydroxyl groups are postulated to be important for the activity. They are required for ligand exchange with 2-propanol. Zirconium 1-propoxide grafted on silica, siliceous MCM-41, and Al-MCM-41 were also active in the MPV reaction. In contrast, zeolite beta, although active in the conversion of cin-namaldehyde, showed poor selectivity toward the desired product, cinnamyl alcohol. Instead, the main product formed was cinnamyl 2-propyl ether. © 2002 Elsevier Science (USA).
Source Title: Journal of Catalysis
ISSN: 00219517
DOI: 10.1006/jcat.2001.3480
Appears in Collections:Staff Publications

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